Method for treating soft foundition by fast 'high vacuum impacting dense, pile base' compound method
A treatment method and high-vacuum technology, applied in infrastructure engineering, soil protection, construction, etc., can solve the problems of low pile foundation bearing capacity, large post-construction settlement, and large thickness difference, so as to improve the bearing capacity of single piles, Effects of differential settlement control and frictional resistance improvement
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[0007] The rapid "high-vacuum compaction and pile foundation" composite soft ground treatment method of the present invention, firstly, adopts well point pipes densely distributed in the soft soil (generally 1-3m interval), and the upper end of the well point pipes is connected to a vacuum pump with a horizontal pipe to evacuate. Actively reduce the water content of soft soil (pore pressure water), pull out the well point pipe, and use compaction (dynamic compaction or vibratory rolling) to reduce the soft soil pore ratio. The well point pipe is vacuumed and compacted several times (conventional 1 to 4 times), and then, fill the soft soil with gravel and compact it to form a pier, or use the immersed tube method to form a gravel pile, or use cement and soil to mix into a pile.
[0008] example:
[0009] This method was applied to a 100,000 m3 oil storage tank in a certain project. The original design was ¢1.2 gravel piles. Finally, this method is used to make the soft soil tr...
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